at one's mother's knee
US /æt wʌnz ˈmʌðərz niː/
UK /æt wʌnz ˈmʌðərz niː/

1.
od najmłodszych lat, u kolan matki
from a very early age; from childhood
:
•
He learned to play the piano at his mother's knee.
Nauczył się grać na pianinie u kolan matki.
•
She was taught good manners at her mother's knee.
Dobre maniery zostały jej wpojone u kolan matki.